I've definitely noticed that some small regional banks make extra money by offering services to other small banks and credit unions. For example, cashier's checks issued by my (fairly large actually) credit union are actually drawn on a midwestern regional bank that they seem to use as a service provider. So it's possible that bank is somehow involved in your bank's card issuance.
I also wonder if it's a contract call center or fraud prevention company and the caller ID value was just bad... at some point their phone number may have gotten put on a listing for one of the banks that uses them and now it's stuck in the Google Caller ID database or whatever. Google's caller ID is frequently pretty out of date and it's unclear how you would get it fixed (e.g. my husband has had his phone number for years and Android phones still show someone else's name when he calls).
I also wonder if it's a contract call center or fraud prevention company and the caller ID value was just bad... at some point their phone number may have gotten put on a listing for one of the banks that uses them and now it's stuck in the Google Caller ID database or whatever. Google's caller ID is frequently pretty out of date and it's unclear how you would get it fixed (e.g. my husband has had his phone number for years and Android phones still show someone else's name when he calls).